Heat accumulating type heat pump steam engine and steam generating method

Abstract

The invention discloses a heat accumulating type heat pump steam engine comprising a high temperature heat pump circulation system, a heat storage system, a steam reheating system and a plurality of shut-off valves. The high temperature heat pump circulation system comprises a refrigerant compressor, an oil separator, a four-way valve, a plate cooler, an expansion valve, an evaporator, a water feeding pump and a circulating water pump; a lower end heat side inlet of an oil cooler communicates with a lower end high temperature oil outlet of the oil separator, an upper end heat side outlet of the oil cooler communicates with the refrigerant compressor, and thus an oil circuit circulation loop is formed; the heat storage system comprises a heat storage water tank, a pressure reducing valve, acirculating water pump and a flash tank; the steam reheating system comprises a steam compressor and an electric auxiliary heat device, and an outlet in the top of the flash tank is connected with the electric auxiliary heat device through the steam compressor. The device achieves the aims that the manners of heat storage during the nighttime valley period and heat release during the daytime peakperiod are adopted simultaneously, the steam production cost is reduced, electric power supply is adopted, the atmospheric pressure steam, the low pressure steam, the superheated steam and the like can be supplied, and various steam demands are met.

Description

technical field [0001] The invention relates to the technical field of heat pump steam engines, in particular to a heat storage heat pump steam engine for peak shifting and valley filling. Background technique [0002] With the continuous deepening of my country's industrialization process, energy conservation and environmental protection issues have received widespread attention, especially in recent years the implementation of the "coal to electricity" policy, traditionally coal-fueled steam boilers are gradually replaced by electricity-based steam generators However, when the existing heat pump steam engine generates steam, since the temperature of the water vaporization process remains unchanged, the circulating water maintains a high temperature state, and it is difficult to reduce the outlet temperature of the cooler, which makes the system difficult to operate stably. Contents of the invention [0003] The purpose of the present invention is to overcome the deficienc...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a regenerative heat pump steam engine, which solves the system failure problem caused by the excessive temperature of the circulating water and cannot cool the condenser during the steam production process of the high temperature heat pump. The way of heat storage during time intervals and heat release during peak hours during the day can greatly reduce the cost of steam production, which is conducive to the popularization and application of this technology

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